UserListViewModel implementation with reducers & processors

UserListViewModel.kt

class UserListViewModel(
    private val actionProcessors: Collection<ActionProcessor<Action, Mutation, Event>>,
    private val reducers: Collection<Reducer<Mutation, ViewState>>,
    private val initialState: ViewState = ViewState(),
): ViewModel() {
    ...

    fun process(action: Action) {
        viewModelScope.launch {
            actionProcessors
                .map { actionProcessor -> actionProcessor(action) }
                .merge()
                .collect { value ->
                    mutation?.let(::handleMutation)
                    event?.let(eventChannel::trySend)
                }
        }
    }
   
    private fun handleMutation(mutation: Mutation) {
        reducers
            .asIterable()
            .forEach { reducer ->
                _viewStateFlow.update { currentState ->
                    reducer(mutation, currentState)
                }
            }
    }
}